观察组织再生膜毒理、药理作用。
Objective :to study Tissue Regeneration Membrane′s toxicity and pharmacological effects.
目的：观察壳聚糖作为牙周引导组织再生膜的生物相容性。
Objective: to investigate the biocompatibility of chitosan as membrane for periodontal guided tissue regeneration (GTR).
目的探讨用冷冻异体骨膜作为引导骨组织再生膜的可能性。
Objective Explores the feasibility of guiding bone tissue regeneration by frozen homologous periosteum.
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